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Connection with Host:
Host 25S
Printer 9P
Host 9S
Printer
9P
(PC or compatible)
(PC or compatible)
DTR 20
……
1 DSR
DTR 4
……
1 DSR
DSR 6
……
6 DTR
DSR 6
……
6 DTR
TX 2
……
2 RX
TX 3
……
2 RX
RX 3
……
3 TX
RX 2
……
3 TX
CTS 5
……
7 RTS
CTS 8
……
7 RTS
RTS 4
……
8 CTR
RTS 7
……
8 CTS
GND 7
……
5 GND
GND 5
……
5 GND
Alternatively you can connect the 3 wires as follows:
Host 25S
Printer 9P
Host 9S
Printer
9P
(PC or compatible)
(PC or compatible)
TX 2
……
2 RX
TX 3
……
2 RX
RX 3
……
3 TX
RX 2
……
3 TX
GND 7
……
5 GND
GND 5
……
5 GND
pin 4
pin 4
pin 5
pin 6
pin 6
pin 7
pin 20
pin 8